Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति
JEE Main & Advanced
Chemistry
Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति
Question Bank
Extended or long form of periodic table
question_answer
An element has the electronic configuration \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},\] \[3{{s}^{2}}3{{p}^{6}}3{{d}^{5}},\,4{{s}^{1}}\]. It is a
A)s-block element
B)p-block element
C)d-block element
D)Inert gas
Correct Answer:
C
Solution :
d-block. As the last \[{{e}^{-}}\] enters in d-subshell.